import sys

import pygame
import game_functions as gf
from button import Button
from game_stats import GameStats
from scoreboard import Scoreboard
from ship import Ship
from settings import Settings
from pygame.sprite import Group

def run_game():
    # 初始化
    pygame.init()
    ai_settings = Settings()
    # 创建一个屏幕对象
    screenSize = (ai_settings.screen_width, ai_settings.screen_height)
    screen = pygame.display.set_mode(screenSize)
    # 设置游戏窗口名称
    pygame.display.set_caption("Alien Invasion")
    # 创建一个用于存储游戏统计信息的实例
    stats = GameStats(ai_settings)

    # 创建一艘飞船
    ship = Ship(screen)
    # 创建一个用于存储子弹的编组
    bullets = Group()
    # 创建一个外星人
    aliens = Group()
    # 创建外星人群
    gf.create_fleet(ai_settings, screen, ship, aliens)
    play_button = Button(ai_settings, screen, "play")
    # 创建计分板
    scoreboard = Scoreboard(ai_settings, screen, stats)

    # 开始游戏的主循环
    while True:
        # 监视键盘和鼠标事件
        gf.check_events(ai_settings,stats,play_button, screen, ship, bullets, aliens)

        #  游戏结束后 不再执行
        if stats.game_active:
            ship.update()
            # 更新子弹
            gf.update_bullets(ai_settings, screen,stats,  ship, aliens, bullets, scoreboard)
            # 更新外星人
            gf.update_aliens(ai_settings, stats, screen, ship, aliens, bullets)

        # 绘制更新屏幕（背景，外星人）
        gf.update_screen(ai_settings, screen, stats, ship, aliens, bullets, play_button, scoreboard)

run_game()